# NOT RUN {
library(igraph)
g1 <- matrix(c(0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0), ncol = 4)
rownames(g1) <- c("a", "b", "c", "d")
colnames(g1) <- c("a", "b", "c", "d")
r_mat <- make_reduced(list(g1), nsplit = 1)
r_igraph <- make_reduced_igraph(r_mat$reduced_mat[[1]])
plot_reduced(r_igraph)
# }
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